Launch EC2 instance using boto3

Introduction

This Script launches ec2 instance using native boto3.

Pre-requisites

• Ensure you install the latest version of python and requests package.

python3 -m venv .venv
source .venv/bin/activate
pip3 install -r requirements.txt

• We need IAM user access key and secret key to run this script. Please refer AWS documents to create the same (or) follow below steps.
  • Open the IAM console at https://console.aws.amazon.com/iam/.
  • On the navigation menu, choose Users.
  • Choose your IAM user name (not the check box).
  • Open the Security credentials tab, and then choose Create access key.
  • To see the new access key, choose Show. Your credentials resemble the following:
    • Access key ID: AKIAIOSFODNN7EXAMPLE
    • Secret access key: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

To run script

• Execute the below command which will create the ec2 instance at the particular aws region.

./createInstance.py -k <AWS_ACCESS_KEY> -s <AWS_SECRET_KEY> --aws_region <AWS_REGION> -t <AWS_INSTANCE_TYPE> -i <AWS_AMI_ID> -n <AWS_TAG_NAME>

Example:

./createInstance.py -k XXXXXXXX -s XXXXX --aws_region ap-south-1 -t t2.micro -i ami-04505e74c0741db8d -n test_aws

Notes:

• The script contains two classes :
  • aws_ec2 -> Which will create the key pair, security group which opens 22(SSH) port, and launch the instance in the respective region.
  • install_application -> Which will connect to respective instance and execute the commands sudo apt update

Security:

• The security group has only 22 port.
• AWS key and secret key are not stored anywhere in the script,it is taken from the command line.